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Maxi CespedesMC

Maxi Cespedes

Co-Founder / Product Engineer (Frontend)

€450/day
Rijswijk, NL
8-15 years

Average response time: 1 hour

About Maxi

  • English

    Native or bilingual

  • Dutch

    Basic

  • Spanish

    Native or bilingual

Remote only
Primarily works remotely

Experience

  • Stepcraft
    Co-Founder / Product Engineer (Frontend)
    August 2025 - Today (11 months)
    Netherlands
    Co-founded Stepcraft, a step-based RPG mobile game built with React Native, Supabase, and Vercel. Owned frontend delivery and contributed to game design and iteration loops based on user feedback. Grew early traction to 600 active users and a Discord community of 1,100 members.
  • Creative Fabrica
    Senior Frontend Engineer
    February 2025 - February 2026 (1 year)
    Netherlands
    Led migration of the My Accounts application from WordPress to Next.js, using Cloudflare Workers, A/B testing, and performance monitoring to maintain stable business and engagement metrics. Led Marketplace Design System initiative: launched live documentation, versioned component packages, governance, and adoption metrics; migrated top 10 core components and the design token system to improve consistency and development speed. Implemented Prometheus metrics and Grafana dashboards for a self-hosted Next.js cluster; introduced frontend success/latency metrics, SLOs, and automated alerting to improve reliability and incident response. Reduced Kubernetes cluster costs by 4x+ annually by building multi-platform Docker images, migrating workloads AMD64 → ARM64, improving autoscaling rules, and reducing pod resource consumption via caching and right-sizing.
  • WeTransfer
    Senior Frontend Engineer II
    October 2021 - February 2025 (3 years and 4 months)
    Netherlands
    Improved and scaled the upload user journey, supporting a reliable experience for 90M+ monthly users. Planned and executed migration of wetransfer.com from a Ruby monolith-served SPA to a Next.js whole-site delivery stack. Introduced frontend observability and defined SLIs/SLOs with SRE; improved MTTD from ~2 hours to ~11 minutes for core user journeys. Rolled out a new uploader library to the Transfer app, improving upload performance by 3.5% and raising large-file success rate from 93.43% to 95.07%. Led frontend implementation of company-wide pricing/packaging changes, introducing five new tiers across multiple countries. Implemented Workspaces feature, driving a 94.3% quarter-over-quarter increase in net seats added.

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Education

  • Information Systems Engineer
    Universidad Tecnológica Nacional
    2014
    Information Systems Engineer

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